Wrench.



No. 725,103. PATENTED APR. 14, 1.903. R. J. LOGKHART.

WRENCH.

APPLICATION FILED JAN.8,1903.

N0 MODEL.

1 1am W1 11 3/ 11 15 1% O O O O O W .1 Q 2 O O i j 0 O a o O O UNITED STATES RICHARD JAMES LOCKHART, OF PITTSBURG, PENNSYLVANIA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 725,103, dated April 14, 1903.

Application filed January 8, 1903. Serial No. 138,208. (No model.)

To aZZ whom it may concern.-

Be it known that I, RIonARnJAMEs LOOK- HART, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Wrenches; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to wrenches, and has special reference to what are known aschain wrenches. 1

The object of my invention is to form a cheap and simple construction of wrench which can be applied to nuts, pipes, &c., and

which will prevent the marring or nicking of the objects to which the same is applied, as well as one which can be easily and quickly connected to different-size objects and one which can be applied to such objects in narrow spaces or places, such'as corners, 850.

My invention consists,generally stated, in the novel arrangement,construction,and combination of parts,as hereinafter more specifically set forth and described, and particularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct and use my improved wrench, I will describe the same more fully, referring to the accompanying drawings, in which- Figure 1 is a side view of my improved wrench. Fig. 5 is a plan view of the outer end of the supporting-bar. Fig. 4 is a plan view of the end of the chain carrying the loop. Fig. 2 is a longitudinal central section of the handle, showing the other parts in full lines; and Fig. 3 is a cross-section of such handle, showing the locking means.

Like symbols of reference herein indicate like parts in each of the figures of the draw- 1ngs.

As illustrated, 1 represents the supportingbar, the inner end 2 of which is adapted to be held within the hollow portion 3 of the handle 4 by means of a pin or shoulder 5 on said inner end 2 fitting against a flange or shoulder 6, formed in said hollow portion 3, as shown in Figs. 2 and 3. The supportingbar 1 is flat and of rectangular shape, and the outer or portion beyond the inner end 2, within the handle 4:, is enlarged or widened, as at 1, while the end of such outer portion 1 is of circular or rounded form, as at 2. Within the slats 2 of this rounded end 2. is pivoted one end 7 of a chain 7, as at 7", which chain '7 is of the ordinary construction of alternate solid and hollow links 8, which are formed from the short plate-sections 9 and pivoted together at their ends by the pivot-pins 10. The other end 11 of the chain 7 has pivoted to the end pivot-pin 10, through its slots 11", the loop 11, which is adapted to fit over and catch onto a hook 12, formed on the end of the screw-bar 13, which bar 13 is of semicircular shape in cross-section and is adapted to rest upon and slide along the supporting-bar l by means of the screw-threads 14, formed on said bar 13, engaging with a threaded socket 15, formed in the hollow portion 3 of the handle.

The use and operation of my improved wrench are as follows: The parts being assem bled as shown in Fig. l, and it is desired to apply the wrench to a pipe, nut, or other object,all thatis necessaryis to place loop 11 and the chain '7 over and around the object, such as the pipe A, (shown in Fig. 3,) and connect the loop 11 to the hook 12 on the bar 13. After this is done the operator by turning the handle 4 in one direction can screw out the bar 13 by means of the threads 14: on said bar 13 engaging the threaded socket 15 in said handle 4, which will allow said bar 13 to pass or slide along the supporting-bar 1 to a position thereon and cause said chain to tighten around the pipe A. The continued tightening of said chain 7 will cause the same to bind around said pipe and against the rounded end 2 on the bar 1, as shown in Fig. 3, thereby enabling such wrench to grip or bite on said pipe A and permit the same to perform its work in holding said pipe or other object for any desired purpose. The wrench can be released and removed from said pipe A by the operator turning the handle 1in the other direction from that above described, which will cause the screw-bar 13 to be moved back along the bar 1 and fed into the handle 4 by the threads 1 1 thereon engaging with the socket 15 in said handle 4, thereby releasing said chain 7, after which the loop 11 can be lifted ed the hook 12 on said bar 13 and the said loop and chain 7 removed from around the pipe A.

Whenit is desired to remove or separate the parts of my improved wrench for the purpose of packing, shipping, or any other purpose desired, all that is required is to turn the handle 4 in the proper direction, so that the screw-bar 13 is screwed entirely out of its threaded socket 15 and removed from the supporting-bar 1. The bar 1 can then be raised so that the shoulder 5 at its inner end 2 is free from the shoulder 6 in said handle 4and said bar 1, carrying the chain 7, removed from said handle. The parts can be rearranged in position by placing the inner end 2 of the bar 1, carrying the chain 7, within the hollow portion 3 of the handle 4 asufiicient distance, so that the shoulder 5 thereon passes beyond and comes in contact with the shoulder 6 in said handle, after which the screw-bar 13 can be placed on said bar 1 and screwed into the threaded socket 15 in the handle 4 by its threads 14, when the parts are ready and in position for use.

It will thus be seen that my improved wrench is capable of easy and rapid adjustment to its work and being also capable of separation enables the same to be packed or carried conveniently and within a comparatively small space. By the use of the same in connection with nickeled or other polished surfaces of pipe-nuts, &c., it will also be seen that such objects can be held or turned as desired without liability of injury to the surfaces thereof,.andin order to insure all possible liability of injury to such nickeled or other polished surfaces a strip of paper, linen, or other cloth can be placed around such surface and between the parts of the wrench, so that the binding or gripping action will come upon such paper, cloth, &c.

The wrench is capable of a variety of uses and being made of few parts will not be liable to get out of order or become broken in use or handling.

Various modifications in the construction and design of the various parts of my improved wrench may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages. What I claim as my invention, and desir to secure by Letters Patent, is

1. A wrench comprising a handle, a supporting-bar extending out from said handle, a screw-bar connected to said handle and adapted to slide on said supporting-bar, and

a chain having one end connected to the outer end of said supporting-bar and its opposite end connected to said screw-bar, whereby a movement of the latter will cause the object to be held or turned to be gripped between said chain and the outer end of the supporting-bar.

2. A wrench comprising a handle, a supa screw-bar connected to said handle and,

adapted to slide'on said supporting-bar, and a chain having one end pivoted to the outer end of said supporting-bar and its opposite end detachably connected to said screw-bar, whereby a movement of the latter will cause the object to be held or turned to be gripped between such chain and the outer end of the supporting-bar.

3. A wrench comprising a handle, a supporting-bar extending out from said handle and provided with a rounded outer end, a screw-bar connected to said handle and adapted to slide on said supporting-bar, and a chain having one end pivoted to the rounded outer end of said supporting-bar, and its opposite end detachably connected to said screw-bar, whereby a movement of the latter will cause the object to be held or turned to be caught between such chain and the rounded outer end of the supporting-bar.

4. A wrench comprising a handle, a supporting-bar extending out from said handle and provided with a rounded ,outer end, a

screw-bar connected to said handle and adapted to slide on said supporting-bar and provided with a hook thereon, and a chain having one end pivoted to the rounded outer end of said supporting-bar and its opposite end detachably connected by a loop to the hook on said screw-bar, whereby a movement of the latter will cause the object to be held or turned to be caught between such chain and the rounded outer end of the supporting-bar.

5. A wrench comprising a handle having a hollow portion therein, a supporting-bar extending out from said hand1e and provided with a rounded outer end, a screw-bar on said supporting-bar adapted to engage with the hollow portion in said handle, a hook on said screw-bar, and a chain having one end pivoted to the rounded outer end on said sup-' porting-bar and its opposite end detachably connected by a loop to the hook on said screwbar, whereby a movement of the latter will cause the object to be held orvturned to be caught between said chain and the rounded outer end on the supporting-bar.

6. In a wrench, the combination of a handle, having a hollow portion therein, a supporting-bar fitting within said hollow portion, a screw-bar on said supporting-bar, and means within the hollow portion of said handle for detachably connecting said supporting-bar to said handle.

7. In a wrench, the combination of a handle, having a hollow portion therein, a supporting-bar fitting within said hollow portion, a screw-bar on said supporting-bar, a shoulder within said hollow portion, and a shoulder on said supporting-bar adapted to come in contact with said first-named shoulder for detachably connecting said supporting-bar to said handle.

8. In a wrench, the combination of a handle, having a hollow portion therein, a, supporting-bar fitting within said hollow portion,

a screw-bar on said supporting-bar adapted to engage with a threaded socket in said hol- 10w portion, a. shoulder Within said hollow portion, and a shoulder for detachably conneoting said supporting-bar to said handle.

In testimony whereof I, the said RICHARD JAMES LOCKHART,ha,ve hereunto set my hand.

RICHARD JAMES LOGKHART.

Witnesses:

J. N. COOKE, HARRY HATTON. 

